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Uniform-motion yoke plate 60 × 40 × 8 with closed channel for a 12 mm crank

What is a uniform-motion crank channel? · Modern device · basis: Xem Studio design following Brown's figure (1868); true size, no printing allowance

Also called: constant velocity cam slot, uniform motion yoke, yugo de movimiento uniforme, Gleichlaufkulisse

Exact dimensions. True size, with no printing tolerance added.

length
60.0 mm
width
40.0 mm
height
8.0 mm

Notes

  • 60 × 40 × 8 plate with a closed 3 mm channel through it whose centre line is the crank-pin path drawn in the plate's own frame when the plate moves at constant speed: x = r cos θ − X(θ), y = r sin θ with X(θ) linear in θ (24 mm out over half a turn, back over the other half). Two Ø5 bores along X (y = ±17) for the guide pillars.
  • The channel is a rounded diamond, 51 × 27 mm over its walls; the pin changes direction at the two pointed ends.
  • Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

Uniform-motion yoke plate 60 × 40 × 8 with closed channel for a 12… size chart

dimensionvalue
plate60 × 40 × 8 mm
channel3 mm wide, closed loop 51 × 27
crank radius12 mm
guide bores2 × Ø5 at y = ±17

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

Henry T. Brown (1868, public domain)Five Hundred and Seven Mechanical Movements — scan on archive.orgwebPublisher's page; dimensions are facts
507movements.comBrown's movement No. 354: figure, his text and an animationwebPublisher's page; dimensions are facts
Xem StudiodrawingwebPublisher's page; dimensions are facts

Free files

★ Free files 1 parts. Xem Studio design: free to use, print and sell things from; not to be republished as files. Xem Studio Design License. index.json

uniform-motion-yoke-plate-60x40-r12plate, z 0..8, bores along XSTEP · STL
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Plain text: sheet.txt · JSON: /api/geometry?object=uniform-motion-yoke-plate-60x40-r12

Uniform-motion yoke plate 60 × 40 × 8 with closed channel for a 12 mm crank, isometric render of a generated part
Render of uniform-motion-yoke-plate-60x40-r12 from the free STEP; not to scale.

Fits with

Crank with closed channel yoke (uniform-speed reciprocation), isometric render of a generated part
Crank with closed channel yoke (uniform-speed reciprocation)4 sizes★ 1 file

Questions

What is a uniform-motion crank channel?

60 × 40 × 8 plate with a closed 3 mm channel through it whose centre line is the crank-pin path drawn in the plate's own frame when the plate moves at constant speed: x = r cos θ − X(θ), y = r sin θ with X(θ) linear in θ (24 mm out over half a turn, back over the other half). Two Ø5 bores along X (y = ±17) for the guide pillars.